So I left my SWG on for weeks on end... and my FC rose and rose. Been too cold to swim for over a month, so very ready to close this pool. The leaves fall in faster than I can reasonably keep up with by running pump and pool vac.
My readings are below:
pH = 7.8
FC = 15
CC = 0
TA = 70
CH = 80
CYA = 40
I got a little confused with shocking and closing - some posts mentioned dropping the FC to 1/2 of shock (I'm pretty much at shock now, unless I raise my CYA). Another thing I don't get is the reference page/chart for SWG starts at CYA much higher. Do I need to add CYA prior to closing (thereby adding chlorine to get back up to shock)?
I'm using a vinyl solid cover - Nothing fancy.
Last year I had a few issues: my Gizzmo wasn't threading right, so I had water leaking out of the skimmer. botched the closing royally last year (didn't measure levels of anything. Drained a LOT of water, to realize it was too low, so just added more water from hose). So needless to say opening, I was at green. Would love to avoid that this year.